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<div class="title">ReflectionHelper.cs</div>  </div>
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<a href="_reflection_helper_8cs.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="keyword">using</span> System;</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="keyword">using</span> System.Collections.Generic;</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="keyword">using</span> System.Linq;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="keyword">using</span> System.Text;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="keyword">using</span> System.Reflection;</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="keyword">using</span> System.Diagnostics.Contracts;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="keyword">namespace </span>SystemSharp.Common</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;{</div>
<div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_common_1_1_reflection_helper.html">   29</a></span>&#160;    <span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">class </span><a class="code" href="class_system_sharp_1_1_common_1_1_reflection_helper.html">ReflectionHelper</a></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    {</div>
<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#af490aa2ecb346bbc2ba45f3364aa5b04">   40</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">static</span> Type[] <a class="code" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#af490aa2ecb346bbc2ba45f3364aa5b04">GetArgTypes</a>(<span class="keyword">this</span> MethodBase mb)</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;        {</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;            List&lt;Type&gt; result = <span class="keyword">new</span> List&lt;Type&gt;();</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;            <span class="keywordflow">if</span> (!mb.IsStatic)</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;            {</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;                result.Add(mb.DeclaringType);</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;            }</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;            result.AddRange(from ParameterInfo pi in mb.GetParameters()</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;                            select pi.ParameterType);</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;            <span class="keywordflow">return</span> result.ToArray();</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;        }</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;</div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#a3e5f2a8e308328b84c0d1420f4d11aa6">   58</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">object</span> <a class="code" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#a3e5f2a8e308328b84c0d1420f4d11aa6">Invoke</a>(<span class="keyword">this</span> MethodBase mb, params <span class="keywordtype">object</span>[] args)</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;        {</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;            <span class="keywordtype">object</span> result;</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;            <span class="keywordflow">if</span> (mb.IsStatic || mb is ConstructorInfo)</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;            {</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;                result = mb.ConvertArgumentsAndInvoke(null, args);</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;            }</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;            <span class="keywordflow">else</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;            {</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;                <span class="keywordtype">object</span>[] paramArgs = args.Skip(1).ToArray();</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;                result = mb.ConvertArgumentsAndInvoke(args[0], paramArgs);</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;                Array.Copy(paramArgs, 0, args, 1, paramArgs.Length);</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;            }</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;            <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        }</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#ae71b520f8900dd7d0a447776f4fac125">   80</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#ae71b520f8900dd7d0a447776f4fac125">IsFunction</a>(<span class="keyword">this</span> MethodBase mb, out Type returnType)</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;        {</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;            <span class="keywordflow">if</span> (mb is MethodInfo)</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;                returnType = ((MethodInfo)mb).ReturnType;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;            <span class="keywordflow">else</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;                returnType = typeof(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;            <span class="keywordflow">return</span> !returnType.Equals(typeof(<span class="keywordtype">void</span>));</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;        }</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div>
<div class="line"><a name="l00095"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#abcf7f0d98989cae19321bff3a66ece7e">   95</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#abcf7f0d98989cae19321bff3a66ece7e">IsFunctionOrCtor</a>(<span class="keyword">this</span> MethodBase mb, out Type returnType)</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;        {</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;            <span class="keywordflow">if</span> (mb is MethodInfo)</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;                returnType = ((MethodInfo)mb).ReturnType;</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;            <span class="keywordflow">else</span> <span class="keywordflow">if</span> (mb is ConstructorInfo)</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;                returnType = mb.DeclaringType;</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;            <span class="keywordflow">else</span></div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;                <span class="keywordflow">throw</span> <span class="keyword">new</span> NotImplementedException();</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;            <span class="keywordflow">return</span> !returnType.Equals(typeof(<span class="keywordtype">void</span>));</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        }</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div>
<div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#af914105e788aa94b814f9b09f5e05f6a">  110</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#af914105e788aa94b814f9b09f5e05f6a">ReturnsSomething</a>(<span class="keyword">this</span> MethodBase mb, out Type returnType)</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        {</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;            <span class="keywordflow">if</span> (mb is MethodInfo)</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;                returnType = ((MethodInfo)mb).ReturnType;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;            <span class="keywordflow">else</span> <span class="keywordflow">if</span> (mb is ConstructorInfo)</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;                returnType = mb.DeclaringType;</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;            <span class="keywordflow">else</span></div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;                returnType = typeof(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;            <span class="keywordflow">return</span> !returnType.Equals(typeof(<span class="keywordtype">void</span>));</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;        }</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;</div>
<div class="line"><a name="l00127"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#a24207895015831d5eaecdad1fce72248">  127</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#a24207895015831d5eaecdad1fce72248">IsEnumerable</a>(<span class="keyword">this</span> Type type)</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;        {</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;            <span class="keywordflow">if</span> (type.IsEnum)</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;                <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;            <span class="keywordflow">if</span> (type.IsPrimitive)</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;            {</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;                <span class="keywordflow">if</span> (type.Equals(typeof(<span class="keywordtype">float</span>)) ||</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;                    type.Equals(typeof(<span class="keywordtype">double</span>)))</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;                    <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;                <span class="keywordflow">else</span></div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;                    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;            }</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;            <span class="keywordflow">else</span></div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;                <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;        }</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;</div>
<div class="line"><a name="l00147"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#aa25a0f3748199fea68d579934c3a6a88">  147</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">static</span> IEnumerable&lt;MethodInfo&gt; <a class="code" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#aa25a0f3748199fea68d579934c3a6a88">GetAncestorDefinitions</a>(<span class="keyword">this</span> MethodInfo method)</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        {</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;            MethodInfo basemethod = method;</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;            <span class="keywordflow">do</span></div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;            {</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;                method = basemethod;</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;                yield <span class="keywordflow">return</span> method;</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;                basemethod = method.GetBaseDefinition();</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;            } <span class="keywordflow">while</span> (!basemethod.Equals(method));</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;        }</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;</div>
<div class="line"><a name="l00161"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#a353da773174aa56834d102a73ea2a618">  161</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">static</span> IEnumerable&lt;MethodBase&gt; <a class="code" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#a353da773174aa56834d102a73ea2a618">GetAncestorDefinitions</a>(<span class="keyword">this</span> MethodBase method)</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;        {</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;            <span class="keywordflow">if</span> (method is MethodInfo)</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;                <span class="keywordflow">return</span> GetAncestorDefinitions((MethodInfo)method);</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;            <span class="keywordflow">else</span></div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;                <span class="keywordflow">return</span> Enumerable.Repeat(method, 1);</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;        }</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;</div>
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<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        {</div>
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<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;</div>
<div class="line"><a name="l00191"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#aabfcc000c0290ee3a9031ed9405a9d50">  191</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">static</span> MethodInfo <a class="code" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#aabfcc000c0290ee3a9031ed9405a9d50">FindImplementation</a>(<span class="keyword">this</span> MethodInfo method, <span class="keywordtype">object</span> instance)</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;        {</div>
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<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;            argTypes.AddRange(</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;                method.GetParameters()</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;                .Select(p =&gt; p.ParameterType));</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;            argTypes.Add(method.ReturnType);</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;            Type delegType = System.Linq.Expressions.Expression.GetDelegateType(</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;                argTypes.ToArray());</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;            Delegate deleg = Delegate.CreateDelegate(delegType, instance, method, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;            <span class="keywordflow">if</span> (deleg == null)</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;                <span class="keywordflow">return</span> null;</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;            <span class="keywordflow">return</span> deleg.Method;</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;        }</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;        <span class="keyword">private</span> <span class="keyword">class </span>MethodEqualityComparerImpl : IEqualityComparer&lt;MethodBase&gt;</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;        {</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;<span class="preprocessor">            #region IEqualityComparer&lt;RuntimeMethodHandle&gt; Member</span></div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;            <span class="keyword">public</span> <span class="keywordtype">bool</span> Equals(MethodBase x, MethodBase y)</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;            {</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;                <span class="keywordflow">return</span> x.MethodHandle == y.MethodHandle;</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;            }</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;            <span class="keyword">public</span> <span class="keywordtype">int</span> GetHashCode(MethodBase obj)</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;            {</div>
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<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;            }</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;</div>
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<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;        <span class="keyword">private</span> <span class="keyword">class </span>TypeEqualityComparerImpl : IEqualityComparer&lt;Type&gt;</div>
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<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;<span class="preprocessor">            #region IEqualityComparer&lt;RuntimeTypeHandle&gt; Member</span></div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;            <span class="keyword">public</span> <span class="keywordtype">bool</span> Equals(Type x, Type y)</div>
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<div class="line"><a name="l00263"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#a4c8eabf876a0e136a407f5edd6f901aa">  263</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">static</span> readonly IEqualityComparer&lt;MethodBase&gt; MethodEqualityComparer = </div>
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<div class="line"><a name="l00269"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#a4d0bae3757e816c7e6f061e43c9f81d7">  269</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">static</span> readonly IEqualityComparer&lt;Type&gt; TypeEqualityComparer =</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;            <span class="keyword">new</span> TypeEqualityComparerImpl();</div>
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<div class="line"><a name="l00275"></a><span class="lineno"><a class="line" href="class_system_sharp_1_1_common_1_1_reflection_helper.html#aeade6859893f00f015160fce1cc1e1d1">  275</a></span>&#160;        <span class="keyword">public</span> <span class="keyword">static</span> readonly IEqualityComparer&lt;FieldInfo&gt; FieldEqualityComparer =</div>
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<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;    }</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;}</div>
<div class="ttc" id="class_system_sharp_1_1_common_1_1_reflection_helper_html_af914105e788aa94b814f9b09f5e05f6a"><div class="ttname"><a href="class_system_sharp_1_1_common_1_1_reflection_helper.html#af914105e788aa94b814f9b09f5e05f6a">SystemSharp.Common.ReflectionHelper.ReturnsSomething</a></div><div class="ttdeci">static bool ReturnsSomething(this MethodBase mb, out Type returnType)</div><div class="ttdoc">Returns true if specified method is either a method with non-void return type or a constructor...</div><div class="ttdef"><b>Definition:</b> <a href="_reflection_helper_8cs_source.html#l00110">ReflectionHelper.cs:110</a></div></div>
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